1 #include <arch/x86/boot/multiboot.h>
2 #include <lunaix/common.h>
4 #include <lunaix/fs/twifs.h>
5 #include <lunaix/lunistd.h>
6 #include <lunaix/lxconsole.h>
7 #include <lunaix/mm/cake.h>
8 #include <lunaix/mm/pmm.h>
9 #include <lunaix/mm/valloc.h>
10 #include <lunaix/mm/vmm.h>
11 #include <lunaix/peripheral/ps2kbd.h>
12 #include <lunaix/proc.h>
13 #include <lunaix/spike.h>
14 #include <lunaix/syscall.h>
15 #include <lunaix/syslog.h>
18 #include <hal/acpi/acpi.h>
19 #include <hal/ahci/ahci.h>
21 #include <hal/ioapic.h>
24 #include <klibc/string.h>
29 _lxinit_main(); /* lxinit.c */
35 lock_reserved_memory();
38 unlock_reserved_memory();
41 __do_reserved_memory(int unlock);
44 // #define DEMO_SIGNAL
70 #elif defined DEMO_SIGNAL
72 #elif defined DEMO_READDIR
87 * @brief LunaixOS的零号进程,该进程永远为可执行。
89 * 这主要是为了保证调度器在没有进程可调度时依然有事可做。
91 * 同时,该进程也负责fork出我们的init进程。
99 init_proc_user_space(__current);
101 asm volatile("movw %0, %%ax\n"
110 "retf" ::"i"(UDATA_SEG),
111 "i"(USTACK_TOP & ~0xf),
117 extern uint8_t __kernel_start; /* link/linker.ld */
118 extern uint8_t __kernel_end; /* link/linker.ld */
119 extern uint8_t __init_hhk_end; /* link/linker.ld */
120 extern multiboot_info_t* _k_init_mb_info; /* k_init.c */
122 char test_sequence[] = "Once upon a time, in a magical land of Equestria. "
123 "There were two regal sisters who ruled together "
124 "and created harmony for all the land.";
129 struct hba_port* port = ahci_get_port(0);
130 struct hba_device* dev = port->device;
131 char* buffer = vzalloc_dma(port->device->block_size);
132 strcpy(buffer, test_sequence);
133 kprintf("WRITE: %s\n", buffer);
137 result = dev->ops.write_buffer(dev, 0, buffer, dev->block_size);
139 kprintf(KWARN "fail to write: %x\n", dev->last_error);
142 memset(buffer, 0, dev->block_size);
145 result = dev->ops.read_buffer(dev, 0, buffer, dev->block_size);
146 kprintf(KDEBUG "%x, %x\n", port->regs[HBA_RPxIS], port->regs[HBA_RPxTFD]);
148 kprintf(KWARN "fail to read: %x\n", dev->last_error);
150 kprint_hex(buffer, 256);
159 // 锁定所有系统预留页(内存映射IO,ACPI之类的),并且进行1:1映射
160 lock_reserved_memory();
162 assert_msg(kalloc_init(), "Fail to initialize heap");
164 acpi_init(_k_init_mb_info);
167 timer_init(SYS_TIMER_FREQUENCY_HZ);
172 // ahci_list_device();
178 vfs_mount("/", "twifs", -1);
186 console_start_flushing();
189 unlock_reserved_memory();
191 for (size_t i = 0; i < (uintptr_t)(&__init_hhk_end); i += PG_SIZE) {
192 vmm_del_mapping(PD_REFERENCED, (void*)i);
193 pmm_free_page(KERNEL_PID, (void*)i);
198 lock_reserved_memory()
200 __do_reserved_memory(0);
204 unlock_reserved_memory()
206 __do_reserved_memory(1);
210 __do_reserved_memory(int unlock)
212 multiboot_memory_map_t* mmaps = _k_init_mb_info->mmap_addr;
214 _k_init_mb_info->mmap_length / sizeof(multiboot_memory_map_t);
215 // v_mapping mapping;
216 for (unsigned int i = 0; i < map_size; i++) {
217 multiboot_memory_map_t mmap = mmaps[i];
218 uint8_t* pa = PG_ALIGN(mmap.addr_low);
219 if (mmap.type == MULTIBOOT_MEMORY_AVAILABLE || pa <= MEM_4MB) {
220 // Don't fuck up our kernel code or any free area!
223 size_t pg_num = CEIL(mmap.len_low, PG_SIZE_BITS);
226 for (; j < pg_num; j++) {
227 uintptr_t _pa = pa + (j << PG_SIZE_BITS);
228 if (_pa >= KERNEL_MM_BASE) {
229 // Don't fuck up our kernel space!
232 vmm_set_mapping(PD_REFERENCED, _pa, _pa, PG_PREM_R, VMAP_NULL);
233 pmm_mark_page_occupied(
234 KERNEL_PID, _pa >> PG_SIZE_BITS, PP_FGLOCKED);
236 // Save the progress for later unmapping.
237 mmaps[i].len_low = j * PG_SIZE;
239 for (; j < pg_num; j++) {
240 uintptr_t _pa = pa + (j << PG_SIZE_BITS);
241 vmm_del_mapping(PD_REFERENCED, _pa);
242 if (mmap.type == MULTIBOOT_MEMORY_ACPI_RECLAIMABLE) {
243 pmm_mark_page_free(_pa >> PG_SIZE_BITS);